I don't know an exact length but if you know the length for supercharged + AC then you just need to find the length of a standard vr6 with no AC which plenty of people have done. Then you can take the difference in lengths and find your number. For example (not real numbers) Belt length for stock vr6 = 100 Length for ac delete = 90 Length of supercharged vr6 = 110 So, Length of supercharged belt without ac would be 100 Not an exact method but will give you an idea *****Best way would be to use a string to wrap around where the belt should be then measure the string